Customers on Windows hosts have reported issues connecting to Ably with errors such as:


  • cURL error: SSL certificate problem: self signed certificate in certificate chain
  • SSL_connect returned=1 errno=0 state=SSLv3 read server certificate B: certificate verify failed
  • SSL: CERTIFICATE_VERIFY_FAILED certificate verify failed: unable to get local issuer certificate¬†

This error is caused by out of date root certificates on your server or local machine.  In order to fix this problem, follow the instructions from one of the related issues:


If you are unable to resolve your SSL certificate issue following instructions from above, please raise a ticket and we'll help you get your root certificate issue resolved.